Speed brake handle with multi-gear control force function

Abstract

The invention relates to a speed brake handle with a multi-gear control force function. The device is composed of a lifting rod assembly (1), a light guide plate (2), an upper cover plate (3), a right support (4), a support screw (5), a central gear (6), a gear locking pin (7), an angular displacement sensor (8), a roller bearing locking nut (9), a sliding groove (10), a cam locking nut (11), a left support (12), a cam rocker arm (13), a sliding groove locking screw (14), a friction plate (15), a disc spring (16), a friction plate locking nut (17), a sliding barrel (18), a lifting spring (19), a sliding barrel bearing (20), a roller bearing (21), an extension spring (22) and a spring fixing nut (23). The speed brake handle is composed of a lifting spring, an extension spring, a cam mechanism (22), a sensor pressing piece (24), a sector gear (25) and a cam transmission bearing (26), an ARM gear groove, an RET gear groove, a 1 / 2 gear groove and a FULL gear groove are formed in the speed brake handle, in the gear switching process, through cooperation of the lifting spring, the extension spring and the cam mechanism, in the gear shifting operation process, a pilot can clearly sense the gear switching state through the peak value sudden change characteristic of operation force feeling, and therefore the gear shifting state can be accurately controlled. Potential safety hazards caused by unobvious handle gear sensing are effectively avoided.

Description

Technical Field

[0001] The invention belongs to the field of mechanical transmission and mechanical manipulation, and relates to a speed brake handle with multi-gear operating force function. Background Art

[0002] The speed brake handle provides the pilot with input to operate the speed brake, which controls the aircraft deceleration by increasing drag and reducing lift. The opening and closing angle of the spoiler is controlled by adjusting the speed brake handle gear position. The existing speed brake handle gear switching is usually achieved by setting a groove position in the slide slot. There is no strong shift reminder between the slide slot positions, and the slide slot position is prone to wear and deformation during long-term use, causing the position to fail, which seriously threatens flight safety. Summary of the invention

[0003] Purpose of the invention: The present invention provides a speed brake handle with multi-gear operating force function, in which a pre-position, a retracted position, a 1 / 2 position and a full offset position are arranged. During the switching process of the four gears, the force sense changes obviously during the gear shifting operation through the cooperation of a lifting spring, a stretching spring and a cam mechanism, so that the pilot can clearly perceive the gear status. The RET position in the slide slot has no actual positioning groove in the slide slot, and static positioning is performed by relying on the rotational torque of the cam rocker arm, thereby avoiding safety hazards caused by handle positioning wear and unclear gear perception.

[0004] Technical solution:

[0005] A speed brake handle with multi-gear operating force function, comprising: a lifting rod assembly, an upper cover plate, a left bracket, a right bracket, a central gear, an angular displacement sensor, a slide groove, a friction plate, a disc spring, a slide cylinder, a lifting spring, a slide cylinder bearing, a roller bearing, a tension spring, a fan gear, and a cam transmission bearing;

[0006] The left and right brackets are both installed under the upper cover plate; a bearing hole seat and a light hole are provided in the middle of the left bracket; an extension body is provided under the left bracket for installing a slide slot; two light holes are provided in the middle of the right bracket;

[0007] A rectangular groove is provided in the middle of the upper cover plate, and the lifting rod assembly passes through the rectangular groove; a circular hole is provided in the middle of the slide tube so as to be sleeved on the lifting rod assembly, and a lifting spring is also sleeved on the lifting rod assembly, and the upper and lower ends of the lifting spring are respectively fixed to the upper cover plate and the slide tube;

[0008] The outer end surface of the rotating shaft at the left end of the slide cylinder is provided with an external thread and is sleeved with a friction plate and a disc spring. The friction plate locking nut is screwed in through the external thread and compresses the disc spring to generate positive pressure;

[0009] The rotating shaft at the left end of the slide cylinder is only equipped with one sector gear, and the rotating shaft at the right end is only equipped with one central gear.

[0010] The angular displacement sensor is installed in the optical holes of the left and right brackets and is pressed against the sensor pressing plate by screws. The transmission gear in the angular displacement sensor is meshed with the central gear and the sector gear.

[0011] A rolling bearing is installed at the bottom of the lifting rod assembly, and the rolling bearing slides in the L-shaped groove of the slide groove, and different gears are arranged in the L-shaped groove.

[0012] Furthermore, a light guide plate having the same shape as the upper cover plate is fixed above the upper cover plate.

[0013] Furthermore, a cylindrical extension shaft is set on the right end face of the center gear, and a conical light hole is opened on the circular surface in the middle of the cylindrical extension shaft. The gear locking pin is a cylindrical body with an oblique conical surface, and is fixedly connected to the center gear by inserting it into the conical light hole of the cylindrical extension shaft on the right side of the center gear.

[0014] Furthermore, the L-shaped groove is provided with a pre-position, a retracted position, a 1 / 2 position, and a full offset position, and the gear position is completed by applying an operating force to the lifting rod assembly through pressing down, pulling, and rotating.

[0015] Furthermore, a cam drive bearing is provided below the left bracket, and a rotating shaft below the cam rocker arm passes through the cam drive bearing and is locked by a cam locking nut;

[0016] One end of the tension spring is hung in the hanging hole of the left bracket, and the other end is connected to the hanging hole of the cam rocker arm.

[0017] Furthermore, a shuttle-shaped contact body is provided at one end of the cam rocker arm that contacts the rolling bearing; when the roller bearing moves between the ARM position and the RET position in the slide groove, a clockwise movement is generated by squeezing the shuttle-shaped contact body of the cam rocker arm, at which time the tension spring is stretched and provides a counterclockwise rebound torque.

[0018] Furthermore, the RET position in the slide slot has no actual positioning groove in the slide slot, and static positioning is performed by relying on the rotational torque provided by the cam rocker arm 13 and the tension spring 22.

[0019] Furthermore, the left and right brackets are also provided with slide bearings for supporting the rotating shafts at the left and right ends of the slide.

[0020] Beneficial Effects

[0021] The present invention proposes a speed brake handle with multi-gear operating force function. During the operation of the speed brake handle, different force feeling characteristics are set according to different gears. The force feeling characteristics have a mutation characteristic. The key gears are positioned by using a rocker arm assembly and a tension spring rotational torque to avoid wear and tear during long-term use. This can provide the pilot with a clear gear switching perception, and the operating method meets the human-machine efficiency requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of a speed brake handle with multi-gear operating force function of the present invention;

[0023] Figure 2 It is a schematic diagram of the left side bracket of the speed brake handle with a multi-gear operating force function of the present invention at 45 degrees;

[0024] Figure 3 It is a cross-sectional view of the speed brake handle with multi-gear operating force function of the present invention;

[0025] Figure 4 It is a schematic diagram of the operating force feeling of the speed brake handle with multi-gear operating force function of the present invention;

[0026] Figure 5 It is a schematic diagram of the installation structure of the cam rocker arm of the speed brake handle with multi-gear operating force function of the present invention;

[0027] Figure 6 This is a diagram showing the use state of the speed brake handle with multi-gear operating force function of the present invention in the pre-position gear ARM;

[0028] Figure 7 This is a diagram showing the use state of the speed brake handle with multi-gear operating force function of the present invention in the retracted gear RET;

[0029] Figure 8 This is a diagram showing the use state of the speed brake handle with multi-gear operating force function of the present invention in the 1 / 2 gear;

[0030] Fig. 9 This is a diagram showing the use state of the speed brake handle with multi-gear operating force function of the present invention in the full gear;

[0031] Among them, there are the lifting rod assembly 1, the light guide plate 2, the upper cover plate 3, the right bracket 4, the bracket screw 5, the center gear 6, the gear locking pin 7, the angular displacement sensor 8, the roller bearing locking nut 9, the slide groove 10, the cam locking nut 11, the left bracket 12, the cam rocker arm 13, the slide groove locking screw 14, the slide cylinder 18, the lifting spring 19, and the fan gear 25. DETAILED DESCRIPTION

[0032] The present invention is described in detail below with reference to the accompanying drawings of the specification. Figure 1 , is a schematic diagram of the structure of the speed brake handle with multi-gear operating force function of the present invention, and the speed brake handle with multi-gear operating force function is composed of a lifting rod assembly 1, a light guide plate 2, an upper cover plate 3, a right bracket 4, a bracket screw 5, a center gear 6, a gear locking pin 7, an angular displacement sensor 8, a roller bearing locking nut 9, a slide groove 10, a cam locking nut 11, a left bracket 12, a cam rocker arm 13, a slide groove locking screw 14, a slide cylinder 18, a lifting spring 19, and a fan gear 25.

[0033] See also Figure 2 , is a schematic diagram of the 45° left side bracket of the speed brake handle with multi-gear operating force function of the present invention. The speed brake handle with multi-gear operating force function is composed of a friction plate 15, a disc spring 16, and a friction plate locking nut 17.

[0034] like Figure 3 As shown, it is a cross-sectional view of the speed brake handle with multi-gear operating force function; it is composed of a friction plate 15, a disc spring 16, a friction plate locking nut 17, a slide bearing 20, and a spring fixing nut 23.

[0035] like Figure 4 As shown, it is a view of the cam rocker arm-tension spring of the speed reducer handle with multi-gear operating force function, which is composed of a cam rocker arm 13, a tension spring 22, and a left bracket 17.

[0036] A shuttle-shaped end face is arranged at the upper end of the cam rocker arm 13, and the roller rolls and squeezes the cam rocker arm 13 in the slide groove. During the rotation process, the cam rocker arm 13 pulls the tension spring 22 clockwise, and can provide a counterclockwise rotation torque during rotation.

[0037] like Figure 5 The figure shows a fixed view of the cam rocker arm, which consists of a cam locking nut 11, a cam rocker arm 13, and a cam drive bearing 26. Two cam drive bearings 26 are inserted into the outer cylindrical shaft end of the cam rocker arm 13, and an external thread is arranged on the outer cylindrical shaft end of the cam rocker arm 13. The cam locking nut 11 is screwed into the shaft end through the external thread to limit the axial displacement of the cam rocker arm 13.

[0038] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the speed brake handle with multi-speed operating force function is in the pre-position, retracted position, 1 / 2 position, and full offset position.

[0039] A speed brake handle with a multi-gear operating force function, comprising a lifting rod assembly 1, a light guide plate 2, an upper cover plate 3, a right bracket 4, a bracket screw 5, a central gear 6, a gear locking pin 7, an angular displacement sensor 8, a roller bearing locking nut 9, a slide groove 10, a cam locking nut 11, a left bracket 12, a cam rocker arm 13, a slide groove locking screw 14, a friction plate 15, a disc spring 16, a friction plate locking nut 17, a slide cylinder 18, a lifting spring 19, a slide cylinder bearing 20, a roller bearing 21, a tension spring 22, a spring fixing nut 23, a sensor pressing plate 24, a fan gear 25, and a cam drive bearing 26.

[0040] The left bracket 12 and the right bracket 4 are connected to the upper cover plate 3 through the bracket screws 5. The left bracket 12 is Z-shaped, and four rectangular protrusions are designed below the left bracket; the right bracket 4 is L-shaped, and two circular light holes are set in the middle. Light holes are set around the light guide plate 1 and connected to the upper cover plate 3 through screws. The upper cover plate 3 and the light guide plate 2 are both rectangular flat plates with a rectangular groove in the middle, and the rectangular groove allows the lifting rod assembly 1 to pass through.

[0041] An external thread is set on the outer end surface of the rotating shaft at the left end of the slide cylinder 18 and is covered with a friction plate 15 and a disc spring 16. The friction plate locking nut 17 is screwed in through the external thread and compresses the disc spring 16 to generate positive pressure. The compressed friction plates 15 rub against each other, and when the slide cylinder 18 rotates, a constant friction force can be generated in a full-range motion environment.

[0042] The left end of the slide 18 is equipped with a central gear 6, and the right end is only equipped with a sector gear 25. The right end face of the central gear 6 is provided with a cylindrical extension shaft, and a conical light hole is opened on the circular surface in the middle of the shaft. The gear locking pin 7 is a cylindrical body with an oblique cone surface, and is fixedly connected to the central gear 6 by inserting it into the light hole of the right shaft of the central gear 6. The angular displacement sensor 8 is installed in the circular light hole in the middle of the left bracket 3 and the right bracket 4, and is pressed with the sensor pressing sheet 24 by screws. The transmission gear installed in the angular displacement sensor meshes with the central gear 6 and the sector gear 25 to provide an angular displacement signal of the lifting component 1.

[0043] The roller bearing 21 can roll in the L-shaped groove inside the slide 10. The L-shaped groove can limit the movement trajectory of the roller bearing 21 and provide a gear position for the speed brake handle through the arc and multiple fitting curves. The L-shaped groove of the slide 10 is provided with a pre-position, a retracted position, a 1 / 2 position, and a full offset position. Applying operating force to the lifting assembly 1 completes the gear position by pressing down, pulling, and rotating.

[0044] The cam rocker arm 13 provides a stable overriding force for the gear switching of the speed brake handle. The cam rocker arm 13 is provided with a shuttle-shaped contact body, and a cylindrical rotating shaft is provided on the end face, and the rotation is realized through the rocker bearing at the bottom of the left bracket 12. The rotating shaft of the cam rocker arm 13 is provided with an external thread, and the cam locking nut 11 can be screwed into the cylindrical external thread of the cam rocker arm 13 to achieve axial dimension limitation. A circular through hole is provided on the right side of the cam rocker arm 13, and the lower end hook of the tension spring 22 can be hung in the circular hole on the right side of the cam rocker arm 13, and the upper end hook can be hung in the circular hanging hole set in the middle of the left bracket 12.

[0045] When the roller bearing 21 moves between the ARM position and the RET position in the slide groove, the shuttle-shaped contact body of the cam rocker arm 13 is squeezed to generate a clockwise movement, and at this time, the tension spring 22 is stretched and provides a counterclockwise rebound torque.

[0046] Two angular displacement sensors 15 are installed on the left bracket 12 and the right bracket 4 respectively. The central gear 6 and the sector gear 25 are respectively arranged at the left and right ends of the slide 17 and mesh with two pairs of angular displacement sensor transmission gears 16. The dual-link displacement signal transmission path design has high reliability and safety characteristics.

[0047] The left bracket 3, the right bracket 4, and the slide groove 10 are designed to reduce weight by hollowing out and digging holes.

[0048] A shuttle-shaped contact body is provided at the contact portion between the cam rocker arm 13 and the roller bearing 21. The linear design of the cam shuttle-shaped contact body is based on static angle calculation and analysis and is formed by multiple fitting curves. In the process of contact with the roller bearing 21, a shuttle-shaped convex point-contraction linear shape is provided so that the operating force required for gear switching increases linearly from a small value to a peak force value and then drops instantly. The prominent feature of this force feeling gradually increasing and then suddenly disappearing can provide the pilot with a more obvious gear switching force feeling.

[0049] The slide cylinder 18 is equipped with a central gear 6 and a sector gear 25. The central gear 6 is fixedly connected by inserting a central wheel anti-backlash shaft 29. The central wheel anti-backlash shaft 29 eliminates transmission clearance through a conical design of the outer end surface.

[0050] The RET position in the slide slot has no actual positioning groove in the slide slot, and static positioning is performed by relying on the rotation torque provided by the cam rocker arm 13 and the tension spring 22.

[0051] The specific working principle of the present invention is as follows:

[0052] The light guide plate 1 and the left bracket 12 are installed on the upper cover plate 3 through the bracket screws 5. The left bracket 4 is Z-shaped, with a circular bearing hole seat and an angular displacement sensor fixing light hole in the middle. The upper cover plate 3 is a rectangular metal plate with a rectangular groove in the middle.

[0053] The cam rocker arm 13 is fixed to the cam locking nut 11 through the cam drive bearing 26. A tension spring 22 is hung on the inclined rocker arm of the cam rocker arm 13. A spring hanging hole is provided at the lower part of the left bracket 12. One end of the tension spring 22 is hung into the left bracket hanging hole. When the cam rocker arm 13 rotates clockwise under the force, the tension spring 22 is stretched to provide a counterclockwise rotation torque for the cam rocker arm 13. This rotation torque is the source of the change in the force sense of gear shifting.

[0054] Similar to the left bracket 12, a circular bearing hole seat and an angular displacement sensor fixing hole are provided in the middle of the right bracket 4. After the slide bearing 20 is installed into the bearing hole seats of the left bracket 12 and the right bracket 4, the cylindrical outer shaft at the left end of the T-shaped slide 18 is inserted into the inner hole of the bearing of the left bracket 12, and then the sector gear 25 and two angular displacement sensors 8 are installed. Then the right bracket 4 is installed on the upper cover plate 3, and the inner hole of the installed slide bearing 20 is inserted into the cylindrical outer shaft at the right end of the slide 17 to complete the support assembly.

[0055] The roller bearing 21 is installed in the bottom hole of the lifting component 1, and the upper end of the lifting component 1 is inserted into the central hole of the slide 18. The lifting component 1 can slide along the circular through hole in the middle of the slide 18. The lifting spring 19 is inserted into the lifting component 1, and the lower end surface of the lifting spring 19 contacts the upper bottom surface of the slide 18 for fixing. The spring fixing nut 23 is screwed in through the external thread set in the middle of the lifting component 1. After the spring fixing nut 23 contacts the lifting spring 19, its preload can be adjusted.

[0056] The slide 10 is installed on the four rectangular extended shaft ends set at the lower part of the left bracket 12, and the slide 10 is fixed by inserting four slide locking screws 14 from the threaded holes on the left side of the left bracket 12. The roller bearing 21 is installed in the guide groove of the slide 10, and the lifting assembly 1 realizes characteristic displacement through the trajectory restriction of the roller bearing 21 in the slide 10.

[0057] The central gear 6 is inserted into the circular shaft at the right end of the slide cylinder 18, and is connected to the slide cylinder 18 using the central wheel anti-backlash shaft 29, and then the gear locking pin 7 is installed for tightening, and finally two angular displacement sensors 8 are installed on the right bracket 4 so that the angular displacement sensor transmission gear 16 is meshed with the central gear 13. Finally, the friction plate 15 and the disc spring 16 are installed on the left end shaft of the slide cylinder 18, and the friction plate locking nut 17 is screwed in to deform the disc spring 16 and the friction plate 15, and the friction structure generates friction resistance. The friction force of the speed reducer is changed by compressing the deformation of the disc spring 16 by the friction plate locking nut 17.

[0058] The speed brake handle is provided with ARM gear, RET gear, 1 / 2 gear and FULL gear slots, and the lifting component 1 can be pressed down and pulled up in the ARM gear and RET gear positions to achieve gear switching.

[0059] During the gear switching process, through the cooperation of the lifting spring, the tension spring and the cam mechanism, the peak mutation characteristics of the operating force sense during the gear shifting operation can enable the pilot to clearly perceive the gear switching state, effectively avoiding the safety hazard caused by the unclear gear position perception of the handle. The 4-degree redundant dual transmission link makes the speed brake handle in the present invention have the characteristics of high reliability and high safety.

[0060] The implementation method of the force gradient change in the present invention is a further detailed description of the present invention in combination with a specific preferred embodiment, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Without departing from the concept of the present invention, for example, a torsion spring-cam structure can be used, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A speed brake handle with multi-position operating force function, characterized in that: include: Lifting rod assembly, upper cover, left bracket, right bracket, central gear, angular displacement sensor, slide groove, friction plate, disc spring, slide cylinder, lifting spring, slide cylinder bearing, roller bearing, tension spring, sector gear, cam transmission bearing; The left and right brackets are both installed under the upper cover plate; a bearing hole seat and a light hole are provided in the middle of the left bracket; an extension body is provided under the left bracket for installing a slide slot; two light holes are provided in the middle of the right bracket; A rectangular groove is provided in the middle of the upper cover plate, and the lifting rod assembly passes through the rectangular groove; a circular hole is provided in the middle of the slide tube so as to be sleeved on the lifting rod assembly, and a lifting spring is also sleeved on the lifting rod assembly, and the upper and lower ends of the lifting spring are respectively fixed to the upper cover plate and the slide tube; The outer end surface of the rotating shaft at the left end of the slide cylinder is provided with an external thread and is sleeved with a friction plate and a disc spring. The friction plate locking nut is screwed in through the external thread and compresses the disc spring to generate positive pressure; The rotating shaft at the left end of the slide is equipped with a sector gear, and the rotating shaft at the right end is equipped with a central gear; The angular displacement sensor is installed in the optical holes of the left and right brackets and is pressed against the sensor pressing plate by screws. The transmission gear in the angular displacement sensor is meshed with the central gear and the sector gear. A rolling bearing is installed at the bottom of the lifting rod assembly, and the rolling bearing slides in the L-shaped groove of the slide groove, and different gears are arranged in the L-shaped groove.

2. The speed brake handle with multi-gear operating force function according to claim 1, characterized in that: A light guide plate having the same shape as the upper cover plate is fixed above the upper cover plate.

3. The speed brake handle with multi-gear operating force function according to claim 2, characterized in that: A cylindrical extension shaft is arranged on the right end face of the center gear, a conical light hole is opened on the central circular surface of the cylindrical extension shaft, and the gear locking pin is a cylindrical body with an oblique conical surface, which is fixedly connected with the center gear by being inserted into the conical light hole of the cylindrical extension shaft on the right side of the center gear.

4. The speed brake handle with multi-gear operating force function according to claim 3, characterized in that: The L-shaped groove is provided with pre-position, retracted position, 1 / 2 position and full offset position. The operating force is applied to the lifting rod assembly to complete the gear position by pressing down, pulling up and rotating.

5. The speed brake handle with multi-gear operating force function according to claim 4, characterized in that: A cam drive bearing is arranged under the left bracket, and a rotating shaft under the cam rocker arm passes through the cam drive bearing and is locked by a cam locking nut; One end of the tension spring is hung in the hanging hole of the left bracket, and the other end is connected to the hanging hole of the cam rocker arm.

6. The speed brake handle with multi-gear operating force function according to claim 5, characterized in that: A shuttle-shaped contact body is provided at one end of the cam rocker arm that contacts the rolling bearing; when the roller bearing moves between the ARM position and the RET position in the slide groove, the shuttle-shaped contact body of the cam rocker arm is squeezed to generate clockwise movement, at which time the tension spring is stretched and provides a counterclockwise rebound torque.

7. The speed brake handle with multi-gear operating force function according to claim 5, characterized in that: The RET position in the slide slot has no actual positioning groove in the slide slot, and static positioning is performed by relying on the rotation torque provided by the cam rocker arm 13 and the tension spring 22.

8. The speed brake handle with multi-gear operating force function according to claim 5, characterized in that: The left and right brackets are also provided with slide bearings for supporting the rotating shafts at the left and right ends of the slide.

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